/**
 * @version v1.0
 * @author} feige
 * @date 2021-11-21-17:43
 * @description
 */
public class Love {
    public static void main(String[] args) {
        double x, y, a;
        for (x = 1.5; x > -1.5; x -= 0.1) {
            for (y = -1.5; y < 1.5; y += 0.05) {
                a = x * x + y * y - 1;
                System.out.print(a * a * a - x * x * x * y * y < 0.00 ? "*" : " ");
            }
            System.out.print("\n");
        }
    }
}
